XTX Topco’s Nephros NEPH Stock Holding History

XTX Topco’s Portfolio NEPH Stock Details NEPH Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-21,617	Closed	-$105K	–	4181
2025 Q4	$105K	Buy	21,617 +7,062	+49%	+$36.1K	﹤0.01%	2625
2025 Q3	$68.8K	Buy	+14,555	New	+$57.2K	﹤0.01%	2101

Other funds holding NEPH

Wexford Capital West Palm Beach, Florida $690M AUM 57.92% 1-Year Est. Return

TCM

Topline Capital Management Santa Monica, California $605M AUM 26.24% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Cornerstone Capital Palo Alto, California $1B AUM 21.47% 1-Year Est. Return

Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return

MFIM

Mesirow Financial Investment Management Chicago, Illinois $6.37B AUM 23.22% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

HighTower Advisors Chicago, Illinois $94.2B AUM 21.24% 1-Year Est. Return

XTX Topco's NEPH Position: Q1 2026 in Review

XTX Topco sold out of Nephros (NEPH) in Q1 2026, closing a stake of 21,617 shares — an estimated $105K sold.

XTX Topco first reported a position in NEPH in Q3 2025 and held it in 2 quarters. The position peaked at $105K in Q4 2025. 27 funds tracked by Wall St. Rank hold NEPH as of Q1 2026.

XTX Topco reported no remaining Nephros position as of Q1 2026 after selling out during the quarter.
XTX Topco sold 21,617 Nephros shares in Q1 2026, an estimated $105K.
XTX Topco first reported a position in Nephros in Q3 2025 and held it in 2 quarters.
XTX Topco's Nephros position peaked at $105K in Q4 2025.
27 funds tracked by Wall St. Rank held Nephros as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.